A man who slapped a woman’s bottom on a bus near Paris has been jailed for three months and, in a first under a new law against catcalling, also fined for lewd remarks about her physique.

The man, inebriated when he boarded the rush-hour bus, smacked the 21-year-old on the buttocks and made an insulting comment about her breasts, before a squabble with the bus driver, who jammed the doors shut while police were alerted.

A judge in Evry, south of Paris, sentenced the man, in his 30s, to three months in prison for the slap, considered an act of outright sexual aggression, and added a fine of €300 (£270) for the offending comments.

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Court and justice ministry officials said the fine was the first imposed under legislation that seeks to deter predatory remarks and harassing actions such as wolf-whistles, which are fairly commonplace in public life in France.

The minister behind the legislation, which also allows for on-the-spot fines of as much as €750, hailed the court decision. “Bravo for the bus driver’s quick-wittedness and the penalty imposed,” tweeted Marlène Schiappa, the gender equality minister.

In the video, a man who had wolf-whistled a 22-year-old woman outside a Paris cafe was seen punching her in the face after she verbally rebuffed him. A suspect in that case was arrested in late August after the footage went viral, prompting a police hunt.

Globally, one in three women and girls experience physical or sexual violence, the United Nations estimates. In France, a recent survey showed 53% of women said they had experienced sexual harassment or assault.